Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
thong cong » trong cong, tong cong, thong thong
than cua » thai cua, ban cua, gian cua
nhan cua » nhat cua, nhan luc, nhan su
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cao » toan ban, toan tap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu xanh - hanh ((than cua) OR (nhan cua)) thong cong tac toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc thieu xanh - hanh ((than cua) OR (nhan cua)) thong cong tac toan cao".
• Adding a wildcard symbol may retrieve word variants: toc thieu xanh - hanh ((than cua) OR (nhan cua)) thong cong tac toan cao*.